DGA3

+1

Like Foosh said, it makes sense.

And (since I've been begging for this) when Michelin finaaaaaallllllyyyyyy comes out with the A/S tires for the GS/Z06, Chevy should also offer that tire as an option. Buyers may then choose the tire they prefer, based on what kind of driving they plan to do with their Vette.

Foosh

DGA,

I mentioned other manufacturers who use all seasons on some variants of a model, and summer performance tires on the high performance versions. However, I'm not aware of any who offer it as a customer choice option. A particular model either comes w/ all seasons or summer performance tires, and you can't choose what tires you want on the version you buy.

Thus, what I was agreeing w/ is that it would make sense for the base to be provided with UHP all-seasons, and the Z51, GS, Z06, and ZR1 all with summer max performance tires.

RapidC84B

I'm buying AS3+ ZPs for my street wheels and will use the stock tires on my track wheels.

Gearhead Jim

There is precedent within GM for having optional tires. When we ordered a 1998 Z28 Camaro back in the day, you could specify the summer (don't recall which model Goodyears) or all season tires (Goodyear RS-A). To make it even more complicated for manufacturing, the RS-A had a lower limit speed and so the computer had to be programmed differently.

That's the kind of "tribal history" that gets forgotten in a company with big upheavals.

Foosh

Perhaps, but a lot of things that were done in the past have long since been discontinued for the sake of simplifying the manufacturing process and saving money. Back in the day, one could "special order" a lot of things.

Weasel

The forecast is snow. Oh well...

DGA3

javenius

I will be replacing the Michelin PSS ZP summer only tires on my Z51 next spring. I am currently inflating them to 30 psi (per the recommendation on the door sill).

For those using the PS AS3+ ZPs, are they to inflated to 30 psi as well?

Thanks
Jim

Patman

Not all F-bodies with RS-As had a speed limit, my 95 Trans Am that I bought brand new originally came with the RS-As and I had that car up to 154 mph once. The summer tire on those cars with the Eagle GS-C. After the Trans Am I factory ordered a 1998 Firebird Formula and I made sure to get the GS-Cs on that one since the RS-As were terrible tires.

managerman

Yes. Same 30psi.

-M

BaconWrappedSushi

A/S3+ fanclub member signing in here too. Great tire! Looking forward to trying it in light snow. Only time I lose traction is when I cause it. Never had a "hydroplane" issue or anything of the sorts.

Also it is a fast enough tire on a backroad to get you in trouble with law enforcement.

xxaarraa

I will be replacing the OEM ZPs with all seasons next spring, so I was glad to see this thread.

Anyone know how the quietness of the AS ZPs compares to non-ZP AS tires like a Conti DSW? After two seasons on the OEM runflats and its horrendous noisy ride, I want the quietest tire possible, even if its not a ZP.

Foosh

I don't think modern runflats are inherently louder than non-runflats. The C7 coupe is inherently loud because there's very little insulation between the rear tires and the cargo compartment. Post after post on this forum describes owners installing extra sound-deadening material. Non-runflats won't solve the noise issue in a C7 coupe.

By contrast, convertibles are ironically much quieter because of a more substantial barrier between passenger cabin and rear axle.

xxaarraa

Foosh, you are very helpful around here, but have an annoying habit of jumping to conclusions and rattling off a lecture you already have prepared.

I didn't say tires were going to solve the noise issue. I asked which tire was quieter. It is well known that run flats are noisier than non run flats. If you have facts or experience (aka other than your own theories) that say otherwise, please feel free to share.

Oh, I would appreciate any answers to my original question - are the Michelin A/S ZPs quieter/noisier than regular non-ZP all seasons from Michelin or Conti

Foosh

No, it was based upon my experience.

I have two sets of tires. I run the OEM PSS runflats in the summer and the AS3+ non runflat in the winter. I do not perceive a significant noise difference.

You appear to be easily annoyed, and I will gladly cross you off my list of people I respond to in an attempt to help in the future.

xxaarraa

Sorry, I did not mean to offend you. I was perhaps reacting to another earlier thread when a group of us were trying to dampen the ticking sound and I remember you launched into a lecture about DI and high pressure fuel systems, most of the info was common sense and unrelated to the topic at hand.

Anyway, most people in this thread seem to say that the AS ZPs are quieter than OEM summer ZPs, so I am curious about your experience that both are equally noisy. OEM ZPs have an annoying ever present wooshing noise and a hard ride; both of which I would very much like to improve even if it means giving up the safety of runflats.

driver9

My 2016 Stingray M7 has 18,000 miles on it and I'm thinking of changing out the original Pilot Super Sport ZPs in favor of the Michelin Pilot Sport A/S 3+ ZPs. Costco has a $70 discount for the purchase of four Michelin tires by January 28, bringing the price for the set to $709.96, plus about $72 for installation.

I'm a little disturbed by a 10-month-old 1-star user review here:
https://www.consumerreports.org/prod.../#user-reviews
The headline on the review was "5 out of 6 tires had balance issues and were out of shape" and goes on to say:
"OK so some background first, I was very satisfied with with the previous Generation Michelin pilot Sport A/S 3, so I opted to buy the new iteration called the 3+ of the same tire for my 2011 BMW X3 35i with 19inch staggered tires. The PS A/S 3+ have improved snow traction as per Michellin. I bought the new set from Costco, as as soon as they were installed I noticed a high frequency vibration in the steering wheel , the foot pedals, and the seat. After much deliberations, and close to $300 of expenditure in getting things checked by BMW, and by Wheel specialists, as Costco could not diagnose the problem, it was confirmed that the Michelins had a out of shape problem, and were impossible to balance as a result.This caused vibration in my BMW. We tested other brand new tires including OEM Pirelli's at the BMW dealer and the problem went away. So I had Costco replace the front two tires to start with them but then again the same problem persisted. 5 out of 6 tires had quality issues and could not be balanced. So these new tires I conclude have very poor QA from the factory, and Michelin or Costco should take the responsibility to compensate for my money spent in diagnosing the bad tires they sold me, but Costco flat out refused to compensate me. I had no other choice but to go for Bridgestone Potenze RE970AS pole position tires, that eliminated the vibration problems and were as smooth as butter, from Costco, as Costco carries only Bridgestone or Michelin brands. I wanted to bring this to the attention of CR as the tire has the highest rating given by them in the UHP category, and I too have had a great experience with its previous iteration, but in my experience with this new 3+ compound there are severe Quality issues that Michelin needs to sort out first, and the tire is undeserving of its top position."

Is this an outlier, or are there really out-of-round and impossible-to-balance issues with these tires? Usually I prefer Michelin tires, but I don't want to get dragged into some boondoggle with these. My current tires still have a reasonable amount of life left in them so I don't _have_ to get new tires now.

Also, is Costco capable of dealing with Corvette tires?

Any feedback on this issue is appreciated.

Also are there any updates from those who have tried the Pilot Sport A/S 3+ ZPs (run-flats)?

jimmbbo

FWIW and barely on topic, I installed these tires (non ZP) on my '11 Mustang GT and had no issues... BIG improvement in road noise and excellent handling... They are not ZP/RFs, so YMMV.
FFWIW, I use America's Tire, that has the same Michelin discount and has a "rotate, repair, replace" plan available for $40 a tire and great customer service - worth seeing what they can do...
https://www.corvetteforum.com/forums...ount-tire.html
Should have bought them at the first tire change, and they are high on the list for when I need tires on my C7...

ElGreco53

Driver9, I'm very happy with my A/S3+ ZP tires. No out-of-round issues, they roll just fine, well into triple digits. Less tire hop than the OEMs in tight turns, only marginally quieter than the OEMs if at all. I have no experience with Costco but ~$700 for a set seems amazingly inexpensive, best price I've seen for a set of 4 is north of $1200.

jimmbbo

$700 is awfully low... The out the door quote with all the Commiefornia fees, taxes, etc is $1400...